:root {
    --bg: #09121f;
    --panel: #101c2d;
    --panel-alt: #152338;
    --border: rgba(255, 255, 255, 0.08);
    --text: #edf2f8;
    --muted: #98a7ba;
    --accent: #39d0b6;
    --accent-warm: #ffb347;
    --danger: #ff6b6b;
    --shadow: 0 18px 45px rgba(0, 0, 0, 0.25);
    --radius: 20px;
    --font: "Segoe UI", "Trebuchet MS", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font);
    background:
        radial-gradient(circle at top left, rgba(57, 208, 182, 0.18), transparent 22%),
        radial-gradient(circle at top right, rgba(255, 179, 71, 0.15), transparent 20%),
        linear-gradient(180deg, #06101b 0%, #09121f 100%);
    color: var(--text);
}

a {
    color: inherit;
    text-decoration: none;
}

.shell {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    padding: 28px 20px;
    border-right: 1px solid var(--border);
    background: rgba(10, 18, 31, 0.85);
    backdrop-filter: blur(18px);
}

.brand {
    display: flex;
    gap: 14px;
    align-items: center;
    margin-bottom: 24px;
}

.brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--accent), #1f7cff);
    color: #03111f;
    font-weight: 700;
}

.brand h1,
.topbar h2 {
    margin: 0;
}

.brand p,
.muted,
.eyebrow {
    color: var(--muted);
}

.nav {
    display: grid;
    gap: 10px;
}

.nav-link {
    padding: 12px 14px;
    border-radius: 14px;
    background: transparent;
    transition: 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    background: var(--panel);
    box-shadow: inset 0 0 0 1px var(--border);
}

.sidebar-footer {
    margin-top: 32px;
    padding: 18px;
    border-radius: 18px;
    background: var(--panel);
}

.ghost-link {
    display: inline-block;
    margin-top: 10px;
    color: var(--accent);
}

.content {
    padding: 28px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--muted);
}

.grid {
    display: grid;
    gap: 18px;
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
    background: linear-gradient(180deg, rgba(16, 28, 45, 0.95), rgba(12, 23, 37, 0.98));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.metric {
    font-size: 30px;
    font-weight: 700;
    margin: 8px 0 0;
}

.card h3,
.card h4,
.card p {
    margin-top: 0;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    white-space: nowrap;
}

th {
    color: var(--muted);
    font-weight: 600;
}

.badge {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(57, 208, 182, 0.12);
    color: var(--accent);
    font-size: 12px;
}

.badge-danger {
    background: rgba(255, 107, 107, 0.14);
    color: #ffc1c1;
}

.button,
button {
    appearance: none;
    border: 0;
    border-radius: 12px;
    padding: 12px 16px;
    font-weight: 600;
    cursor: pointer;
}

.button-primary {
    background: linear-gradient(135deg, var(--accent), #2ab0ff);
    color: #04131f;
}

.button-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
}

form {
    display: grid;
    gap: 12px;
}

input,
select,
textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

.filters {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.flash {
    margin-bottom: 18px;
    padding: 14px 16px;
    border-radius: 14px;
}

.flash-success {
    background: rgba(57, 208, 182, 0.14);
}

.flash-error {
    background: rgba(255, 107, 107, 0.18);
}

.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(100%, 480px);
    background: rgba(12, 23, 37, 0.94);
    border: 1px solid var(--border);
    border-radius: 26px;
    padding: 28px;
    box-shadow: var(--shadow);
}

.split {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 18px;
}

.stack {
    display: grid;
    gap: 18px;
}

@media (max-width: 1100px) {
    .grid-4,
    .grid-3,
    .filters,
    .split {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 820px) {
    .shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .grid-4,
    .grid-3,
    .filters,
    .split {
        grid-template-columns: 1fr;
    }
}